I'd like to read data from a .grd file, made by Oasis Geosoft Montaj.
There is a free viewer that can convert to an ascii file, that can be read in e.g. QGIS, but the viewer program only works in Windows.
Are there any options to import Geosoft grids on a Mac? Preferable free, open source.
(It is not the same format as e.g. GMT .grd, which is a kind of netCDF.)